Matrix Composites and Intermetallic Phases Quiz

Intermetallic phases are ordered and disordered compound phases of two or more metals. Examples of compounds containing intermetallic phases are aluminides of titanium, nickel, and iron.

The properties that make aluminides of titanium, nickel, and iron suitable for high temperature applications are high melting points, adequate resistance to environmental degradation, structural and chemical stability at high temperatures, and retention of specific mechanical properties at elevated temperatures.

The possible reinforcements for intermetallic composites could be in the form of particles, whiskers, or fibers. Some examples of reinforcements used are SiC, Al2O3, B, C, and metals.

Intermetallic composites consist of a matrix of an intermetallic compound reinforced with fibers, whiskers, or particles. The intermetallic matrices should be chemically, physically, and mechanically compatible.

Intermetallic matrices, such as the aluminides of titanium, nickel, and iron, are more promising and widely investigated for high temperature applications due to their high melting points, adequate resistance to environmental degradation, structural and chemical stability at high temperatures, and retention of specific mechanical properties at elevated temperatures.